Niners fans can count on two hands the number of times the Seattle cornerback has called Michael Crabtree "a sorry receiver." Since his rookie season in 2011, Sherman has proven to be a big mouth and a big talent. He's quickly become SF's biggest sports villain for talking trash and, unfortunately for the 49ers, backing it up. Sherman also successfully appealed his suspension for violating the league’s performance enhancing drug policy, starting a war of words between the Seahawks and 49ers over PEDs.

Cubs catcher Michael Barrett lived the dream of baseball fans everywhere when he slugged Pierzynski back in 2006. Giants fans have a special loathing for Pierzynski, but most baseball fans certainly share in that hate as well.

A's fans hated him as a player with the Big Red Machine and as a TV commentator years later. Even though he admitted to never reading ''Moneyball,'' he railed against its principles as a commentator for years. Morgan was raised in Oakland, making his betrayal even deeper.

The enormous defensive tackle got on the Raiders' bad side by injuring QB Rich Gannon on an illegal hit in the 2000 AFC title game. He paid a $10,000 fine for the hit, but some fans would argue he also owes them compensation for subjecting the world to his sideline presence during NFL games on FOX.

Latos hates San Francisco. He’s actually signed autographs with: ''Matt Latos – I hate SF!'' He nearly no-hit San Francisco’s championship team in 2010. He broke Dave Flemming’s windshield (accidentally) when a ball he threw into the bleachers at AT&T Park ricocheted into the parking lot. In 11 career starts against the Giants, he holds an ERA of 2.20. He has a tattoo on his pitching arm reading: ''love me or hate me.''

The Dallas Cowboys All of them. Every last one. Photo-4959794.66997 - GreenwichTime

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Pete Carroll

Cal and Stanford fans hated him when he was the coach at USC. Now, 49ers fans hate him in his new gig in Seattle. Even though he's a local boy, it's hard to find any love for him in Northern California. What's your deal, Pete Carroll?

Pete Carroll Cal and Stanford fans hated him when he was the... Photo-4959798.66997 - GreenwichTime

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Shane Victorino

The Flyin' Hawaiian has done plenty to be hated by San Francisco. He’s hit dramatic walk-offs and started an infamous on-field brawl. And when the brawl — a 2011 bench-clearer — looked about to die down, Victorino shoved past umpires and tackled Giants bench coach Ron Wotus to start it back up.

When he was traded to the Dodgers in 2012, San Francisco probably rejoiced—fans love to hate a good bad guy, and nothing makes a villain into a supervillain like donning Dodger blue. Now, however, he's teammates with Panda in Boston.

Never mind the indecisive and pompous retirement attempts that earned him hate from everyone else. Brett Favre will never be forgiven in San Francisco for playing spoiler to 49ers' playoff hopes four times during the boom years of Green Bay in the '90s and early 2000s.

Even after being traded around while postponing his retirement, Favre seemed to have the Niners’ number. All San Francisco has to balance the hate is "The Catch 2."